Engine Controls - Trouble Code 15, Motor Position Sensor
NO.: TSB-93-13-001DATE: March, 1993
MODEL: See Below
SUBJECT:
DIAGNOSTIC TROUBLE CODE "15"
(MOTOR POSITION SENSOR)
BACKGROUND INFORMATION
When a malfunction is detected in the ISC (Idle Speed Control) motor position sensor, diagnostic trouble code number 15 will appear on the Scan Tool (Multi-Use Tester) readout.
In some service manuals (1991 and earlier), only limited diagnostic information for a malfunctioning ISC motor position sensor is given. This bulletin provides additional diagnostic information to use when diagnostic trouble code 15 is output by the Scan Tool.
VEHICLE AFFECTED
1989-91 Mirage, 1.5L
1990-91 Eclipse, 1.8L
1990-91 Truck, 2.4L
DESCRIPTION
If a trouble diagnostic code 15 is output by the Scan Tool, use the chart along with the appropriate vehicle service manual to diagnose a malfunction in the ISC motor position sensor.